Datasheet

R8C/2H Group, R8C/2J Group 1. Overview
Rev.1.00 Mar 28, 2008 Page 6 of 65
REJ03B0217-0100
1.3 Block Diagram
Figure 1.3 shows a Block Diagram of R8C/2H Group and Figure 1.4 shows a Block Diagram of R8C/2J Group.
Figure 1.3 Block Diagram of R8C/2H Group
R8C/Tiny Series CPU core
Memory
Watchdog timer
(15 bits)
ROM
(1)
RAM
(2)
Multiplier
R0H R0L
R1H
R2
R3
R1L
A0
A1
FB
SB
USP
ISP
INTB
PC
FLG
I/O ports
NOTES:
1. ROM size varies with MCU type.
2. RAM size varies with MCU type.
System clock
generation circuit
High-speed on-chip oscillator
Low-Speed on-chip oscillator
XCIN-XCOUT
Timers
Timer RA (8 bits)
Timer RB (8 bits)
Timer RE (8 bits)
Timer RF (16 bits)
UART or
clock synchronous serial I/O
(8 bits × 2 channels)
LIN module
(1 channel)
8
Port P1
2
Port P3
2
Port P4
3
Port P6
Peripheral functions
Voltage detection circuit
(3 circuits)
Comparator
(2 circuits)
1